Juice Defender AOSP helper?

Couldn't find a post on this and I'm too lazy to install the ROM first to figure it out: Does Juice Defender's "AOSP Helper" install/function correctly on Sapphire? I would really like to use its "switch to 2G" option, but it only works on certain ROMs. Since Sapphire is built from AOSP source, I figured it's got a shot at working.